The 100 photos depict a year in the life of the force and capture a variety of officers and staff at key moments as they unfold.

The diverse shots include a St Helens inspector performing as Elvis Presley for a charity fundraiser and new recruits at their first drill session as well as capturing the effects of cuts on the service.

Chief constable John Murphy said he had no hesitation in sanctioning the project.

Inspector Lewis said: “From the start of the project I was clear that I wanted to capture the people behind the role and go beyond the uniform, which is often the first thing people see when they meet a police officer.

“The project brought fun, sadness, pride and other emotions and of course there were many memorable moments throughout the year.”

The cathedral’s director of enterprise, Eryl Parry, said: “The quality and range of the exhibition shows it’s been a labour of love and we are very proud to be hosting it.”